Cloning: what now? Mining the secrets of the egg

[摘要] It has been discovered that Korean researcher Woo Suk Hwang had lied when he claimed his team cloned human embryos with relative ease and produced stem cells from them. This news was a significant setback for cloning researchers. Biologists are now asking how they can get cloning to work given a very limited supply of eggs.

[关键词] EMBRYONIC STEM-CELLS;NUCLEAR TRANSFER;IN-VITRO;OOCYTES;DERIVATION;FOLLICLES